Of the abstraction. The values for getRadius() or getCircumference() in the above example could possibly be stored directly, or they might be calculated, it will not matter to your caller; the setters may well or might not have Uncomfortable side effects; it would not matter for the caller. See @michael-puckett-ii https://propertyingurugram.in/signature-global-to-deploy-nine-air-quality-monitors-in-gurgaon/